[S4] Architecture construction for functions and properties of materials III -Relationship between Materials Properties and Fabricated Structures through Solidification and Solid Phase Transformation-

[S4.6] Precipitation of intermetallic phases in Al–Mg–Zn–Cu–Ni quintuple alloy by aging at high temperatures

*Ruoqi LI¹, Naoki TAKATA¹, Asuka SUZUKI¹, Makoto KOBASHI¹ (1. Nagoya Univ.)

Keywords:設計合金、耐熱合金、時効処理、析出、金属間化合物

本研究はAl–5Mg–3.5Zn（at％）の組成を持つ耐熱Al合金を基づいて，Cu及びNi元素を添加するAl–5Mg–3.5Zn-2Cu-2Ni（at％）合金を設計し，その設計合金の200℃と300℃高温時効における硬度変化と析出を調べた。